NEC 422

question 9

Multiple Choice

NEC 422.13 requires that the branch circuit overcurrent device and conductors  for a storage-type electric water heater with a capacity of 120 gallons (450 L) or less must be sized at not less than ____ percent of the rating of the water heater .

• A)80
• B)100
• C)125
• D)150

---

Definitions:

Living Standards

The level of wealth, comfort, material goods, and necessities available to a certain socioeconomic class or geographic area.

GDP Growth

An increase in a country's gross domestic product over time, indicating economic expansion.

Cost of Capital

The cost of funds used for financing a business, often considered as the required rate of return to make a capital budgeting project, such as building a new factory, worthwhile.

Net Present Value

A method used to evaluate the feasibility of a project or investment by calculating the difference between the present value of cash inflows and outflows over a period of time.